Verb

1. Auxiliary

1.1. Be

1.1.1. Is

1.1.2. am

1.1.2.1. was

1.1.2.2. .............

1.1.2.2.1. been

1.1.2.3. were

1.1.3. are

1.2. Have

1.2.1. Have

1.2.2. .............

1.2.2.1. Had

1.2.2.1.1. Had

1.2.3. Has

1.3. Do

1.3.1. Do

1.3.2. ............

1.3.2.1. Did

1.3.2.1.1. Done

1.3.3. Does

1.4. Modals

1.4.1. can

1.4.1.1. could

1.4.2. will

1.4.2.1. would

1.4.3. shall

1.4.3.1. should

1.4.4. May

1.4.4.1. Might

1.4.5. Must

1.4.5.1. had to

1.4.6. Have to

1.4.6.1. had to

2. Main

2.1. Regular

2.2. Irregular